Slow-release vapor-phase rust inhibitor and preparation method thereof

The invention relates to a slow-release vapor-phase rust inhibitor. The composition of dodecenylsuccinic acid, 1,2-aminoethyl-17-alkenyl imidazoline, polyol ester of benzoic acid, barium petroleum sulfonate and base oil is adopted by a vapor-phase slow-release agent of a core material, gelatin used alone, or the gelatin and Arabic gum used in combination or a mixture of the Arabic gum, polyamide and epoxy resin can be adopted by a wall material, and the wall material wraps the core material to form a 3-100 [mu]m capsule. When the rust inhibitor is used, the capsule is wrapped with a soft material with meshes, the capsule is placed in a box, and the capsule slowly releases the vapor-phase slow-release agent to fill the interior space of the box, so that metal materials in the box are protected, the release speed of the vapor-phase rust inhibitor is uniform, the anti-corrosion effect is good, and the vapor-phase rust inhibitor can be used during the long-term storage or transportation process and the like. 本发明涉